AA 642 then UA 2104 at O'Hare
Dallas-Fort Worth → Chicago → Palm Springs
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
09:15UA 2104 to Palm Springs leaves the gate
20 h 05 apart on the timetable, overnight
UA 2104 leaves 20 h 05 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.